maddy

 1/*
 2Maddy Mail Server - Composable all-in-one email server.
 3Copyright © 2019-2020 Max Mazurov <fox.cpp@disroot.org>, Maddy Mail Server contributors
 4
 5This program is free software: you can redistribute it and/or modify
 6it under the terms of the GNU General Public License as published by
 7the Free Software Foundation, either version 3 of the License, or
 8(at your option) any later version.
 9
10This program is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with this program.  If not, see <https://www.gnu.org/licenses/>.
17*/
18
19package main
20
21import (
22	"bufio"
23	"errors"
24	"fmt"
25	"os"
26
27	"github.com/foxcpp/maddy/internal/auth/shadow"
28)
29
30func main() {
31	scnr := bufio.NewScanner(os.Stdin)
32
33	if !scnr.Scan() {
34		fmt.Fprintln(os.Stderr, scnr.Err())
35		os.Exit(2)
36	}
37	username := scnr.Text()
38
39	if !scnr.Scan() {
40		fmt.Fprintln(os.Stderr, scnr.Err())
41		os.Exit(2)
42	}
43	password := scnr.Text()
44
45	ent, err := shadow.Lookup(username)
46	if err != nil {
47		if errors.Is(err, shadow.ErrNoSuchUser) {
48			os.Exit(1)
49		}
50		fmt.Fprintln(os.Stderr, err)
51		os.Exit(2)
52	}
53
54	if !ent.IsAccountValid() {
55		fmt.Fprintln(os.Stderr, "account is expired")
56		os.Exit(1)
57	}
58
59	if !ent.IsPasswordValid() {
60		fmt.Fprintln(os.Stderr, "password is expired")
61		os.Exit(1)
62	}
63
64	if err := ent.VerifyPassword(password); err != nil {
65		if errors.Is(err, shadow.ErrWrongPassword) {
66			os.Exit(1)
67		}
68		fmt.Fprintln(os.Stderr, err)
69		os.Exit(1)
70	}
71}